Cuda Array Assignment

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Overview: Array allocations can be done through Cudamallocarray () and Cudamalloc3darray ()

1, Cudamallocarray ()

cudaerror_t cudamallocarray    (    struct Cudaarray * *     array,    const struct CUDACHANNELFORMATDESC *     Desc,    size_t     width,    size_t     height = 0,    unsigned int     flags = 0     )    

Example: 2DArray allocation

1 Cudaarray *d_volumearray;2 Cudachannelformatdesc desc = cudacreatechanneldesc (+, 0, 0, 0, cudachannelformatkindfloat) ; 3 Cudamallocarray (&d_volumearray, &desc, 4 cudamemcpytoarray (d_volumearray, 0, 0, H_volume, sizeof ( float) *128*128, cudamemcpydevicetodevice);

2, Cudamalloc3darray ()

1 cudaerror_t cudamalloc3darray    (    2     struct Cudaarray *     * array,3     const struct Cudachannelformatdesc *     desc,4     struct cudaextent     extent,5     unsigned int     flags = 0     6)    

Cases:

1 Cudachannelformatdesc channeldesc = cudacreatechanneldesc<uchar> (); 2 Cudaarray *d_volumeArray;3 Cudamalloc3darray (&d_volumearray, &channeldesc, volumsize);

Cuda Array Assignment